package com.itheima_05;

public class StudentDemo {
    public static void main(String[] args) {
        Student s1 = new Student();
        s1.show();
        Student s2 = new Student("阿良");
        s2.show();
        Student s3 = new Student(24);
        s3.show();
        Student s4 = new Student("阿良",24);
        s4.show();
    }
}
